1. Institute for Information Transmission Problems (Kharkevich Institute), Russian Academy of Sciences, 127051 Moscow, Russia
2. Faculty of Geography, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
3. Institute for Comprehensive Research of Arid Territories, Khomutniko Street 111, 358005 Elista, Russia
4. State Nature Reserve “Chernye Zemli”, Nekrasov Street 31, 359240 Komsomolskiy, Russia